From 75d251f56138c8499a96bc76c3369e46afac8841 Mon Sep 17 00:00:00 2001
From: Dario Sassi <dario.sassi@egalware.com>
Date: Fri, 13 Mar 2026 13:35:00 +0100
Subject: [PATCH] EgtInterface : - aggiornata interfaccia di
 EgtSurfBezierParamsFromPoint - aggiunta interfaccia di
 EgtSurfBezierGetPointNrmD1.

---
 API_GdbGetSurf.cpp | 40 ++++++++++++++++++++++++++++++++--------
 API_GeoDist.cpp    |  6 ++++--
 2 files changed, 36 insertions(+), 10 deletions(-)

diff --git a/API_GdbGetSurf.cpp b/API_GdbGetSurf.cpp
index d6d05f1..0de1a16 100644
--- a/API_GdbGetSurf.cpp
+++ b/API_GdbGetSurf.cpp
@@ -344,17 +344,41 @@ __stdcall EgtCopySurfTmFacet( int nId, int nFacet, int nDestGrpId)
    return ExeCopySurfTmFacet( nId, nFacet, nDestGrpId) ;
 }
 
+//----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSurfBezierParamsFromPoint( int nSurfId, const double ptOnSurf[3], int nRefId, double* pdU, double* pdV)
+{
+  // verifica parametri
+   if ( ptOnSurf == nullptr  ||  pdU == nullptr  ||  pdV == nullptr)
+      return FALSE ;
+  // eseguo
+   return ( ExeSurfBezierParamsFromPoint( nSurfId, ptOnSurf, nRefId, *pdU, *pdV) ? TRUE : FALSE) ;
+}
+
+//----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSurfBezierGetPointNrmD1( int nSurfId, double dU, double dV, int nUsd, int nVsd, int nRefId,
+                                      double ptP[3], double vtNorm[3], double vtDerU[3], double vtDerV[3])
+{
+  // verifica parametri di ritorno
+   if ( ptP == nullptr  ||  vtNorm == nullptr  ||  vtDerU == nullptr  ||  vtDerV == nullptr)
+      return FALSE ;
+  // eseguo
+   Point3d ptMyP ;
+   Vector3d vtMyNorm, vtMyDerU, vtMyDerV ;
+   if ( ! ExeSurfBezierGetPointNrmD1( nSurfId, dU, dV, nUsd, nVsd, nRefId, ptMyP, vtMyNorm, vtMyDerU, vtMyDerV))
+      return FALSE ;
+  // assegno risultati
+   VEC_FROM_3D( ptP, ptMyP)
+   VEC_FROM_3D( vtNorm, vtMyNorm)
+   VEC_FROM_3D( vtDerU, vtMyDerU)
+   VEC_FROM_3D( vtDerV, vtMyDerV)
+   return TRUE ;
+}
+
 //----------------------------------------------------------------------------
 int
 __stdcall EgtExtractSurfBezierLoops( int nId, int nDestGrpId, int* pnCount)
 {
    return ExeExtractSurfBezierLoops( nId, nDestGrpId, pnCount) ;
 }
-
-//----------------------------------------------------------------------------
-BOOL
-__stdcall EgtSurfBezParamsFromPoint( int nIdSurf, double ptPBez[3], int nDestGroup, double& dU, double& dV)
-{
-   bool bOk = ExeSurfBezParamsFromPoint( nIdSurf, ptPBez, nDestGroup, dU, dV) ;
-   return ( bOk ? TRUE : FALSE) ;
-}
diff --git a/API_GeoDist.cpp b/API_GeoDist.cpp
index 581011d..9478738 100644
--- a/API_GeoDist.cpp
+++ b/API_GeoDist.cpp
@@ -23,6 +23,8 @@ using namespace std ;
 BOOL
 __stdcall EgtPointCurveDist( const double ptP[3], int nId, int nRefType, double* pdDist, double* pdU)
 {
+   if ( ptP == nullptr  ||  pdDist == NULL  ||  pdU == nullptr)
+      return FALSE ;
    Point3d ptTemp ;
    return ( ExePointCurveDist( ptP, nId, nRefType, pdDist, ptTemp, pdU) ? TRUE : FALSE) ;
 }
@@ -32,7 +34,7 @@ BOOL
 __stdcall EgtPointCurveDistSide( const double ptP[3], int nId, const double vtN[3], int nRefType,
                                  double* pdDist, double ptMin[3], int* pnSide)
 {
-   if ( pdDist == nullptr  ||  ptMin == nullptr  ||  pnSide == nullptr)
+   if ( ptP == nullptr  ||  vtN == nullptr  ||  pdDist == nullptr  ||  ptMin == nullptr  ||  pnSide == nullptr)
       return FALSE ;
    Point3d ptTmp ;
    if ( ! ExePointCurveDistSide( ptP, nId, vtN, nRefType, pdDist, ptTmp, pnSide))
@@ -45,7 +47,7 @@ __stdcall EgtPointCurveDistSide( const double ptP[3], int nId, const double vtN[
 BOOL
 __stdcall EgtPointSurfTmDist( const double ptP[3], int nId, int nRefType, double* pdDist, double ptMin[3], int* pnTria)
 {
-   if ( pdDist == nullptr  ||  ptMin == nullptr  ||  pnTria == nullptr)
+   if ( ptP == nullptr  ||  pdDist == nullptr  ||  ptMin == nullptr  ||  pnTria == nullptr)
       return FALSE ;
    Point3d ptTmp ;
    if ( ! ExePointSurfTmDist( ptP, nId, nRefType, pdDist, ptTmp, pnTria))